diff --git a/src/migrations/m20240502_000001_add_object_updated.rs b/src/migrations/m20240502_000001_add_object_updated.rs
new file mode 100644
index 00000000..863c5e04
--- /dev/null
+++ b/src/migrations/m20240502_000001_add_object_updated.rs
@@ -0,0 +1,40 @@
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+	async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+		manager
+			.alter_table(
+				Table::alter()
+					.table(Objects::Table)
+					.add_column(ColumnDef::new(Objects::Updated).date_time().null())
+					.to_owned()
+			)
+			.await?;
+
+		Ok(())
+	}
+
+	async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+		manager
+			.alter_table(
+				Table::alter()
+					.table(Objects::Table)
+					.drop_column(Objects::Updated)
+					.to_owned()
+			)
+			.await?;
+
+		Ok(())
+	}
+}
+
+#[derive(DeriveIden)]
+enum Objects {
+	Table,
+	Updated,
+}
+
diff --git a/src/migrations/mod.rs b/src/migrations/mod.rs
index fdf2be5e..c5b4dae2 100644
--- a/src/migrations/mod.rs
+++ b/src/migrations/mod.rs
@@ -13,6 +13,7 @@ mod m20240418_000001_add_statuses_and_reply_to;
 mod m20240421_000001_add_attachments;
 mod m20240424_000001_add_sensitive_field;
 mod m20240429_000001_add_relays_table;
+mod m20240502_000001_add_object_updated;
 
 pub struct Migrator;
 
@@ -33,6 +34,7 @@ impl MigratorTrait for Migrator {
 			Box::new(m20240421_000001_add_attachments::Migration),
 			Box::new(m20240424_000001_add_sensitive_field::Migration),
 			Box::new(m20240429_000001_add_relays_table::Migration),
+			Box::new(m20240502_000001_add_object_updated::Migration),
 		]
 	}
 }
diff --git a/src/model/object.rs b/src/model/object.rs
index 0a6a6d42..af2a32bf 100644
--- a/src/model/object.rs
+++ b/src/model/object.rs
@@ -25,6 +25,7 @@ pub struct Model {
 	pub to: Audience,
 	pub bto: Audience,
 	pub published: ChronoDateTimeUtc,
+	pub updated: Option<ChronoDateTimeUtc>,
 
 	pub sensitive: bool,
 }
@@ -41,6 +42,7 @@ impl Model {
 			context: object.context().id(),
 			in_reply_to: object.in_reply_to().id(),
 			published: object.published().ok_or(super::FieldError("published"))?,
+			updated: object.updated(),
 			comments: object.replies().get()
 				.map_or(0, |x| x.total_items().unwrap_or(0)) as i64,
 			likes: object.likes().get()
@@ -67,6 +69,7 @@ impl Model {
 			.set_context(apb::Node::maybe_link(self.context.clone()))
 			.set_in_reply_to(apb::Node::maybe_link(self.in_reply_to.clone()))
 			.set_published(Some(self.published))
+			.set_updated(self.updated)
 			.set_to(apb::Node::links(self.to.0.clone()))
 			.set_bto(apb::Node::Empty)
 			.set_cc(apb::Node::links(self.cc.0.clone()))
diff --git a/src/server/inbox.rs b/src/server/inbox.rs
index 01b40b56..54644c35 100644
--- a/src/server/inbox.rs
+++ b/src/server/inbox.rs
@@ -252,6 +252,7 @@ impl apb::server::Inbox for Context {
 				// back up to serde_json::Value because impl Object != impl Actor
 				let actor_model = model::user::Model::new(&object_node)?;
 				let mut update_model = actor_model.into_active_model();
+				update_model.updated = sea_orm::Set(chrono::Utc::now());
 				update_model.reset(model::user::Column::Name);
 				update_model.reset(model::user::Column::Summary);
 				update_model.reset(model::user::Column::Image);
@@ -262,6 +263,7 @@ impl apb::server::Inbox for Context {
 			Some(apb::ObjectType::Note) => {
 				let object_model = model::object::Model::new(&object_node)?;
 				let mut  update_model = object_model.into_active_model();
+				update_model.updated = sea_orm::Set(Some(chrono::Utc::now()));
 				update_model.reset(model::object::Column::Name);
 				update_model.reset(model::object::Column::Summary);
 				update_model.reset(model::object::Column::Content);
diff --git a/src/server/outbox.rs b/src/server/outbox.rs
index 99918b3a..2db6088a 100644
--- a/src/server/outbox.rs
+++ b/src/server/outbox.rs
@@ -327,6 +327,7 @@ impl apb::server::Outbox for Context {
 				if actor_model.icon.is_none() { actor_model.icon = old_actor_model.icon }
 
 				let mut update_model = actor_model.into_active_model();
+				update_model.updated = sea_orm::Set(chrono::Utc::now());
 				update_model.reset(model::user::Column::Name);
 				update_model.reset(model::user::Column::Summary);
 				update_model.reset(model::user::Column::Image);
@@ -357,6 +358,7 @@ impl apb::server::Outbox for Context {
 				if object_model.content.is_none() { object_model.content = old_object_model.content }
 
 				let mut update_model = object_model.into_active_model();
+				update_model.updated = sea_orm::Set(Some(chrono::Utc::now()));
 				update_model.reset(model::object::Column::Name);
 				update_model.reset(model::object::Column::Summary);
 				update_model.reset(model::object::Column::Content);